Vacuum radiator-valve.



G. VAN DYKE.

VACUUM RADIATOR VALVE.

APPLIGATION FILED MAY 18, 1914.

, ,R m mm m H m M H m My m 2 w 5 m, w a Y 4 4 Q i A US$35? ,3 8 ,2 7 z n u F 2 4 WITNESSES ATTORNEY G. VAN DYKE. VACUUM RADIATOR VALVE. APPLIUATION. FILED MAY 18,.1914. 1,1 31,096 v Patented Mar. 9, 1915.

2 SHEETS-SHEET 21 WlTN ESSES ATTORNEY GEORGE VAN DYKE, or New BRUNSWICK, NEW JnasnY'.

VACUUM RADIATOR-VALVE.

Specification of Letters Patent.

Patented Mar. 9, 1915'.

Application filed May 18, 1914. Serial 110 839377.

To all whom itmay concern.

Be it known that I, GEORGE VAN DYKE, a citizen of the United States, residing at New Brunswick, in the county of MiddleseX and State of New Jersey, have invented a' new and useful Vacuum Radiator-Valve, of which the following is a specification.

This invention has reference to improvements in nipple-like valve structures for steam radiators, and its object is to provide a nipple structure which mav be included in a pipe connection from the point in the radiator usually occupied by the air valve to a low point in the radiator to clear the radiator from pocketed air so as to thereby quickly establish a circulation of steam in the radiator.

In accordance with the present invention there is provided a nipple structure having an intermediate threaded portion and a'ter minal nozzle which, when the device is installed, extends into a pipe for an appropriate distance, this pipe being either the steam inlet pipe of the radiator or another pipe opening into a correspondingly low part of the radiator at the end thereof remote from the steam pipe. The large end of the nipple structure is arranged for connection to a pipeleading to that part of the radiator usually occupied by the air valve. The nipple structure is provided with a valve for controlling a passage leading from the interior of the nipple structure to the atmosphere, and other passages are provided for causing the operation of the valve by differences in pressure established Within the nipple structure.

The invention will be best understood from a consideration of the following detailed description, taken in connection with the accompanying drawings forming a part of this specification, with the further understanding that while the drawings show a practical form of the invention, the latter is not confined to any strict conformity with the showing of the drawings, but may be changed and modified so long as such changes and modifications mark no material departure from the salient features of the invention.

In the drawings :Figure 1 is an elevation partly in section of the inlet end of a.

radiator, showing the nipple structure applied. Fig. 2 is a longitudinal central section of the nipple structure on a larger scale than shown in Fig. 1. Fig. 3 isa sec tion on the line 33 of Fig. 2. Fig. 4, is a section on the line 44 of Fig. 2. Fig. 5 is a cross section. of an air inlet plug used in the nipple structure. Fig. 6 is a longitu dinal central section of a modified form of the nozzle end of the nipple structure. Fig. 7 is a side elevationof a radiator with the nipple structure at the end of the radiator remote from the steam inlet pipe. Fig. 8 is an elevation with parts in section of the nipple structure formed for use with the arrangement of Fig. 7.

Referring to the drawings, there is shown in Fig. 1 a portion of a radiator 1, and in Fig. 7, a'larger portion of a radiator 1, which may be taken as indicative of any suitable type of radiator. At one end of the radiator there is a supply pipe 2 including the usual controlling valve 3, and it may be assumed that the radiator system is of the type in which the supply. pipe constitutes a return pipe forwater of condensation.

Radiators are customarily supplied at the end remote from theinlet with an air valve, and instead of the air valve the present invention as shown in Fig. l and associated figures, provides a nipple structure entering the pipe 2 and connected to the point usually occupied by the air valve by a pipe 4.

The arrangement disclosed in Fig. 7 differs somewhat from that of Fig. l, and will be described hereinafter.

The nipple structure 5 comprises a body member terminating at one end in an exteriorly threaded portion 6 to which is applied a thimble nut 7, holding a coupling 8 to the body portion of the nipple 5, this coupling being of a type into which the pipe 4 may be threaded, while the joint between the coupling 8 and the end 6 is of the ground type, although the invention is by no means limited to any particular form of connection.

The body portion is provided with the usual tool receiving part 9 customarily of hexagonal shape, and extending laterally from the tool receiving portion and from a continuation 10 of the body portion, is an ofiset 11 which may be thinner than the body portion and in one piece therewith. From that end of the body portion remote from the end 6 there is provided an axial continuation 12 terminating in a nozzle 13, and the axial continuation 12 adjacent, to the nozzle 13 is exteriorly threaded as indicated at 14, so that the nipple structure may be readily screwed into the pipe 2 with the nozzle 13 interior thereto. In the structure shown in Fig. 1 and associated figures the nozzle13 is bent or turned to one side of the longitudinal axis of the nipple structure at an angle thereto which may approximate thirty-five degrees, or this nozzle may have another angular relation to the longitudinal center line of the structure. For instance, in Fig. 6 there is shown a nozzle continuation 13 having a right angular extremity 13 1nstead of the arrangement shown in Fig. 1 and associated figures, where a nozzle 13 is gently curved. It will be understood, however, that the nozzle structure may be either angular or curved with relation to the longitudinal center line of the structure, and is preferably deflected to one side of such center line either to a moderate degree, as ind cated in Figs. 1 and 2, or to fully or approximately ninety degrees, as indicated in Fig.

6, but in either instance it is preferred that the nozzle structure be directed to an extent in the direction of fiow of steam into the radiator. The result of this is that there is more or less suction established at the mouth of the nozzle because of the flow of steam thereby, the action being somewhat similar to an injector action.

Extending axially through the body memher is a bore 15 of relatively large diameter approximating the internal diameter of the pipe 4. The bore 15 is continued to a point near the axial continuation or neck 12 through which there is a bore 16 of considerably smaller diameter than the bore 1 5, and the bore 16 may taper as shown until it terminates in the nozzle 13 in a bore 17 of mately parallel, the outer end of the passage 20 being closed by a plug 21. The passage 20 is made much smaller than the passage 18 for a purpose which will hereinafter appear.

The two passages 18 and 20 are connected by another passage 22 in the offset 11, and

the passage 22 is continued through the passage 20 and to the top of the offset 11 in the a form of a counterbore 23. The upper end 1 of the counterbore-is closed by a screw plug 2 1 in which there is formed a small axial: passage 25 enlarged by a counterbore 26 where facing the counterbore 23. The passage 25 terminates inside of the plug 24 and is open to the atmosphere through a slit 26 formed laterally into the plug 24 which is of suflicient length to extend outside of the offset 11. This provides free communication;

between the counterboredportion 23 of: the passage 22 and the atmosphere without liability of choking of the passage 25 by ex-.

traneous matter which cannot readily find its way through the lateral slit 26. Lodged in the counterbore 23 is a ball valve 27, the conjunction of the counterbore 23 with the passage 22 forming a valve seat 28 for the valve 27.

Assuming-that the nipple structure is duly installed with the nozzle 13 or 13 as the 1 then on the opening of the valve 3 steam,

which is supposed to be present, flows into the radiator in the usual manner.

tions within the nipple structure, such as will cause a flow of air through the nipple structure from the remote end of the radiator where air is often pocketed. The pres-- sure of steam entering the radiator also tends to cause the flow of air through the pipe 4: toward the nipple structure, and this air finds its way to the atmosphere through the passage 20 above the valve 27 then lodged on the seat 28 and through the small passage or orifice 25 and slit 26 to the atmos phere. When the air is all out of the radiator, steam under pressure finds its way into the bore 15 and from thence into the pas sages 18 and 22, and these being larger than the passage 20 the steam exerts superior pressure upon the ball, valve 27 at the seat 28, forcing the valve into the counterbore 26 where it seats agalnst the corresponding end of the small passage 25, closing it to the atmosphere. So longas steam pressure remains within the radiator,-the ball valve is held in the raised position since the steam pressure is sufliciently superior to atmospheric pressure, but when the steam is turned. oil the pressure drops to or below at.- mospheric pressure and the ball falls to the seat 28.

The valve structure may be otherwise located than at the steam inlet pipe, as will be seen from Figs. 7 and 8.

In Fig. 7a radiator l, steam inlet pipe 2,

and valve 3 are shown the same as in Fig. 1. A pipe 4 is connected to the radiator at the point usually occupied by the commonly employed air1valve, and a continuat'ion i of the pipe a is connected to a low point of the same radiator section at the same end of the radiator, that is, the end remote from the pipe 2. The pipe 45 is connected to the nipple structure 5 by-the-cou- Such' stream of steam in passing the nozzle 13 7 tends to produce lowered pressure condi portion 14: is screwed into the corresponding end of the pipe P, so that the nipple structure bridges the gap between the adjacent ends of the pipes 4 and 4 The operation of the structure installed as shown in Fig. 7 is like that of Fig. 1, except that the injector action of the flowing steam across the end of the nozzle is not present.

The showing of the drawings is sufiicient to indicate that the nipple structure is susceptible of a variety of uses without departure from the principles of the invention.

The valve 27 is made of a diflerent metal from the metal forming the valve seat, the valve 27 being usually formed of phosphor bronze, while the body of the nipple structure may be cast out of brass. When the ball and the chamber in which the ball rests are warmed up by the steam, the seat will not expand to a greater extent than the ball valve and allow a leakage.

What is claimed is 1. A nipple structure for radiators having a longitudinal bore and provided at the end portions with means for connecting the structure to pipes, the bore having adjacent passages leading laterally therefrom and at the ends remote from the passages provided with a common connection to the atmosphere, and a valve in and movable along the common connectionto the atmosphere between said passages and beyond the atmospheric side of the passage closer to the atmospheric end of the common connection, that passage leading from the bore which is the nearer to the atmosphere being of smaller diameter thanthe other passage and the valve being free to move under pressures set up in the respective passages to close said common connection against connnunication with the atmosphere.

2. A nipple structure for radiators having a longitudinal bore with an air outlet from an intermediate portion of the bore, said outlet comprising a plurality of passages of different sizes with another passage connecting them together and opening to the atmosphere, said last-named passage being provided with spaced valve seats on opposite sides of the one of the first-named passages of smaller size, and a valve movable in the connecting passage between the,

valve seats and responsive to difierences of pressure established in the passages.

3. A nipple structure for radiators, comprising an elongated body member having a nozzle at one end, and means for the connection of a pipe thereto at the other end,

the body member being provided with a lateral ofiset and both the body member and nozzle having a continuous bore there through, the lateral offset being provided with passages of different sizes leading from the bore and having a bridging passage connecting them and extended to the atmosphere, and a pressure responsive valve in the bridging passage and movable therein to close said passage to the atmosphere.

4. A nipple structure for radiators comprising a body member with a nozzle continuation at one end for introduction into the steam inlet pipe of a radiator and at the other end provided with means for the attachment of a pipe thereto, said nozzle end being arranged at an angle to the longitudinal center line of the nipple structure and the latter having a; bore leading therethrough from one end to the other with passages of different sizes leading laterally therefrom to and connected together before reaching the atmosphere, and an automatically operable valve located in said connec-' tion and subject on opposite sides to difi'erence in pressure established in the passages of difierent sizes to be moved by said difference in pressure into position to close the common connection against communication with the atmosphere.

5. A nipple structure for radiators, com-' prising an elongated body member with a longitudinal bore, said body member having an axial continuation terminating in a nozzle and communicating with the bore of-the body member by a bore of smaller diameter leading through the nozzle, and said body member having a lateral ofiset with passages therein of different diameters communicating with the bore and with another passage intersecting both of the first-named passages and leading to the atmosphere, and a differential valve in the intersecting passage responsive to differences of pressure estab lished in the first-named passages for closing them to the atmosphere.

6. A nipple structure for radiators, comprising an elongated body member with an axial bore, and having an axial continuation passages, the last-named passage being" formed with a valve receptacle and valve seat, a plug in the last-named passage and also provided with a valve seat in line with the first-named valveseat and with a passage of still smaller diameter communicating directly with the atmosphere, and a valve lodged in the valve receptacle and movable into engagement with either of the valve seats under the action of differential pressure in the passage of 4 different diameters.

7. A nipple structure for radiators comprising a body member having a nozzle extension for introduction into the, steam pipe of a radiatonand said body member and nozzle extension having communicating bores therethrough with the bore in the body member provided with a plurality of passages leading therefrom, said body :memher having another passage at the ends of said plurality of passages connecting said ends, and also leading to the atmosphere, and an automatic controlling valve for the atmospheric connection movable along the last named passage by difference in pressure exerted thereon through the diiferentpassages leading from the bore.

8. A nipple device for use in steam radiators, comprising a body portion having a lateral oflset and at one end provided with a nozzle extension having exterior screw threads for introduction into the steam inlet pipe of a radiator and with the nozzle defiected out of line with the longitudinal center line of the body portion and both the body portion and nozzle having communicating bores with the bore of the bodyportion larger than that through: the nozzle, and thelateral ofi'set being provided with two connected. passages of diiferent. diameters opening into the bore of thebody portion and communicating with the atmos phere, the passage of larger diameter being the more distant from the atmosphere, and a differential valve between said passages and the atmosphere and responsive to close the atmospheric connection on the establishment of steam pressure within the nipple structure.

9. An attachment for steam radiators comprising a nipple structure having a body portion with means at one end for the attachment of a pipethereto and at the other end constructed for insertion into a steam pipe of a steam radiator, said nipple structure having a free passage longitudinally therethrough with a portion within that part of the nipple structure to be-inserted into the steam pipe of the radiator of less diameter .than'the remainder of the passage, and said nipple structure being provided with passages of different'diameters communicating with that .part of the longitudinal passage of larger diameter and also communicating with the atmosphere, and a pressure responsive valve movable to closecommunication with the atmosphereby diflerences of pressure established in the passages of different diameters, the passage of larger diameter being more distant from .the 1at.-:

mosphere than the passage of smaller diameter.

10. An attachment for steam radiators comprising :a nipple structure having means at one end for the connection of a ,pipe thereto and at the other end constructed for insertion into the steam inlet pipe of a radiator and there deflected out of line with the longitudinal center line of; the structure,

said nipple structure havinga free passage longitudinally therethrough with the part extending through the deflected end of the structure conforming to said deflection and there of reduced. diameten'and said nipple.

structure being also provided withintermediately locate-d passages leading laterally from the longitudinal passage and at the '1 ends remote from said longitudinal passage opening into another passage connecting said ends, and in turn leading to the atmos phere, and an automaticvalve insaid lastnamed passage movableialong the latter toward the atmospheric end thereof and thereprovided with a seat for closing said lastnamed passage to the atmosphere, and said valve being constructed to respond "to dif:

ferential pressure established on opposite.

sides thereof by steam. traversing the lateral passages leading fromthe longitudinal passage through the nipple structure.

11. An attachment for steam radiators com risin a ni le structure havin a bod portion with means at one end for the attachment of a'pipe thereto and at the other and with still another passage connecting;

the passages of difi'erent diameter and leading to the atmosphere, and a reciprocatory valve in the last-named passage havingia range of movement to travel across the smaller one of the-lateral passages and said smaller passage being closer to the atmosphere than. the larger lateral passage.

In testimony, that I claim the foregoing as my own, I have hereto aifixed my signature Y in the presence of two witnesses.

GEO-RGE'VAN DYKE- Witnesses:

HARRY G. BUJRTEN, F. W. GONING.

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